PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/29-17:57:20
G05     72.0           67.2                9.8 +/-    0.35      10.6 +/-    0.35  0.270 / 0.580
G12     185.4          40.1               12.3 +/-    1.90      17.8 +/-    1.90  0.240 / 0.660
G21     266.1          12.3                8.7 +/-   13.93      23.0 +/-   13.93  0.030 / 0.080
G25     249.5          55.9               11.1 +/-    0.76      13.0 +/-    0.76  0.070 / 0.080
G29     324.1          48.1                9.6 +/-    1.10      12.4 +/-    1.10  0.040 / 0.060